Abstract: The disclosure relates to a method for evaluating electrically conductive objects comprising the steps of: (A) providing a computer-generated model of the object to be evaluated; (B) defining the one-dimensional representation of the object by means of a curve line, “center trajectory”, along the longitudinal axis of the object; (C) defining a number of radii, “blue disks”, along the center trajectory, said radii enclosing the three-dimensional geometry of the object; (D) generating a plurality of auxiliary trajectories using the radii defined in step (C), wherein the totality of the trajectories display the object with respect to its potential to absorb the applied tangential electric field, E-field; and (E) evaluating the tangential E-field at each of the trajectories generated in step (D) and the subsequent statistical preparation.

Abstract: A phantom for calibration and quality assurance of an MR tomograph that comprises a phantom body with measuring aids and an intermediate bottom in at least four planes. The first plane contains only measuring fluid. The second plane contains wedge-shaped elements. The third plane contains marks of known distance. The fourth plane contains comb-shaped elements. The measuring aids of the second plane are arranged on one side of the intermediate bottom and those of the fourth plane on the other side. The marks of the third plane are arranged in the intermediate bottom. This arrangement enables reliable calibration of the MR tomograph in a few steps with only this phantom.

Abstract: The invention relates to a phantom for simple calibration and quality assurance in an MR tomograph, having a phantom body (2), measuring aids (10, 11, 12, 13) and an intermediate bottom (14) having an upper and a lower side, wherein the measuring aids (10, 11, 12, 13) and the intermediate bottom (14) are arranged in the phantom body (2) in at least four planes (6, 7, 8, 9) and a first plane (6) comprises as the measuring aid only the measuring fluid (10), a second plane (7) comprises as the measuring aid wedge-shaped elements (11), a third plane (8) comprises as the measuring aid marks (12) of known distance from one another, and a fourth plane (9) comprises as the measuring aid comb-shaped elements (13), wherein the measuring aids (11) of the second plane (7) are arranged on one side of the intermediate bottom (14), the measuring aids (13) of the fourth plane (9) are arranged on the other side of the intermediate bottom (14) and the measuring aids (12) of the third plane (8) are arranged in the intermediate

Abstract: A device and a method for testing the MR-safety of an implant (4). The device includes a phantom (1) that has a test volume filled with a medium (2), wherein the test volume receives the implant (4) to be tested, at least one RF transmitter (3) that emits radio-frequency electromagnetic radiation into the test volume. The device is used for detecting the heating of the implant (4) and/or of the medium (2) surrounding the implant.

Abstract: There is a need for devices and methods which allow for a risk-free and reliable test of the MR-safety of implants outside the human body. For this purpose, the invention proposes a device for testing the MR-safety of an implant (4), comprising a phantom (1) that has a test volume filled with a medium (2), wherein the test volume receives the implant (4) to be tested, at least one RF transmitter (3) that emits radio-frequency electromagnetic radiation into the test volume, and comprising means for detecting the heating of the implant (4) and/or of the medium (2) surrounding said implant. The invention furthermore relates to a method for testing the MR-safety of an implant (4), in which a device of this kind is used.

Abstract: The invention relates to a vessel filter comprising at least one conductor loop (21) which forms the inductance of an electric resonance circuit. According to the invention, the conductor loop (21) forms the vessel filter or parts of a vessel filter. The invention provides a vessel filter which is characterized by good mechanical properties, especially a high degree of flexibility and stability, offering good representability in MR imaging systems.